First system need suggestion

Hi all

I got a Rockford 800.2 and I'm thinking of getting 2 Kicker 12"L7 subs. I'm just wondering if the amp has sufficient power. And do I need a Cap?If I do 1 farad or 2 farad cap should i use

Thanks for the comment.. : )

A ROCKFORD 800.2 IS A PRETTY NICE AMP.  THEY RUN ON A HIGHER

POWER SUPLY WHICH MAKES THEN PERFORM AS A 1000 WATT AMP.U SHOULD HAVE NO TROUBLE POWERING UR SUBS. CAPS AND ODD NOISE TO UR SYSTEM ( U HEAR BASS WHEN CHANGING SONGS ). I WOULD SUGGEST ISOLATING A SECOND BATTERY , A GEL CELL....

I WOULD ALSO LOOK AT THE AUDIOBAHN LINE FOR SUBS! THEY POUND AND SOUND GOOD

i just picked up 2 entry line 15's and i'm rockin' out 156.9 dbs with the same amp u got.

and i have no problems!

Hahaha...  Kevin you are so wrong.  A cap will not add noise to your system, but rather filter noise out.  You ever wonder what they put in a noise filter?  Yep, you guessed right, It's a capacitor!  Sounds like you had a problem with a ground loop whenever you experienced that "Odd noise."    Audiobahn 15's rockin  156.9 db, huh?  At what frequency, and what type of enclosure?  Also, where do you put the mike at for the meter you use to measure the SPL with?  What's the Xmax on those subs?  I personally view Audiobahn as crap but everyone is entitled to their own opinion.  As far as a punch 800 pushing 1000W, it is possible, as long as you can provide it with a constant 14.4v  which is pretty much impossible without a badass charging system...  Try putting a multimeter on your power and ground terminals of the amp and see how far the voltage dips...  I bet it drops well below 14.4V!  What do you mean by "Higher power supply?"  Lemme tell ya, RF is too cheap to use a regulated power supply, and is somewhat inferior to other amps such as PPI and JL Audio (which use regulated power supplies) which will pump out the juice even at voltage drops as low as 10v!  xxMxx... as far as your question goes, the amp should be fine to power your subs.  And if you want to use a cap (Which I highly recommend) the size you need will all depend on how much amperage your alternator puts out.  If you have a weak (average) charging system, don't even think about adding a second battery, because all it will end up doing is adding a dead load to your system.  In other words, your amp will drain the second battery dead and after that you have even less juice to work with than before... Why?... because your alternator is having to charge a dead battery and power an amplifier simultaneously.  In turn, you have a even larger voltage drop to the amplifier.  Instead, try using anywhere from a 5-15F cap.  I personally prefer a Phoenix Gold Titanium Powercore.  One hell of a 15F cap!  You can sustain the voltage you need to drive that amp with an average alternator with this cap, given you run the proper size power wire and ground.  I'd personally use a 0/1 gauge wire with a circuit breaker.  I'd also upgrade my ground wire running from the battery to chassis to AT LEAST 2 gauge but preferably 0/1.  Also, with a set of equivelent ground wires running from the amp and cap SEPERATELY to the same point on the chassis, you can ensure you will not have a problem with voltage drops.  Always make sure to test the spot you are grounding to in comparison with the negative terminal on the battery to determine that you have the best "grounding potential" as possible.  All of this my friend will make sure that amp will be putting out 800w+ continuous since it does not have a regulated power supply.  If you need help with anything, feel free to drop me a line..

-Jesse

jellynutzo@aol.com

Earmark Car Audio - The Leader Loud and Clear

www.earmarkcaraudio.com

hey guy

if you looking to put a cap in use a batcap......we use them in our comp cars and they work and dont cost that much......

a batcap is basically a battery like I said, think I worded it wrong.  sorry..

It's hooked up like a cap, except you don't have to charge it up, since it's a battery it is charged. 

Reason I said smaller 12V battery is cause that's what it is...instead of a battery the size of the one under your hood, it's about teh size of a riding lawn mower battery. 

It works in the same manner as a Cap, except, the power seems to be delivered mroe quickly, than it does with a cap.  And the meet power demands more efficiently.  What I've started to do is this..batteries on Sub Amps, and Caps on the mids and highs.  Reason being, the lower the frequency goes the greater teh demand for power.

hope that helps

it's easy...

I assume you're using a distribution block, or running seperate bat. lines..whatever flaots your boat..

for the battery, just but it inline with the amps power....

so...the battery line going to the Sub amp..will be hooked up to the positive...

Ok let me try this again...I jsut confused myself...

ok..for the sub amp with Battery:

Take the 12V line from the battery, and hook it to the positive terminal of the battery that you're using as a "cap" ( the smaller one )..hook the amp also up to the positive terminal...ground the battery where you are grounding the amps.  I hope that made sense..if it didn't repost, and I'll see if I have a diagram I can e-mail you, or I'll draw on and scan it in.....yup I'm that lazy..

As far as the Caps...do the same thing...jsut follow the directions on chargin the cap..

if you're still confused e-mail  me         deathsdementedjester420@hotmail.com  and I'll send you a diagram...and hope I didn't confuse you too much...

No problem man...no problemo...

now...where's my beer!!